I assembled this AR 15 M4 clone from an M&A kit on a Bushmaster lower . The build was an educational experience , I learned a lot about the AR platform from the build . When I ordered the kit I chose the 1 in 9 twist barrell because I was happy with the 55 grane round but wanted to be able to use 62 grane if needed . The only major difference form an issue M 4 is the lack of the granade launcher cut . I have put a few mods on the rifle sence the build , I hilighted the control markings and installed the single point adaptor . This rifle has performed as well as any of the isseued rifles I carried while in the army . The M4 pattern is a nice upgrade from A1 and A2 rifles I carried .

It is a nice build indeed. On most of those kits they include a standard buffer, which is a bit light for the carbines. Reliability will be improved by going to a H2 buffer, as the military discovered.

I love everything about the M4/CAR clones except the short sight radius, so I've been building them with 20" barrels to pick up another 4" of sight radius. My aging eyes can't really focus on the front sight of a carbine any more.

The interesting thing is that building a long-barrelled version has brought the geezers out of the woodwork and I've had to build a half dozen or so for them. Here's a few pics:

Nice rifle guys. The prices to build or buy are definitely attractive right now. I have 4 stripped lowers waiting to be built right now. I just seem to keep finding other things to spend my money on lately.

I picked up a C7 upper really cheap last year and decided to find as many used parts as I could to build a rifle. This is what I ended up with. The only new parts is , Anderson stripped lower, buffer and spring, and a few of the small springs.